考虑热能输运动态特性的电–热综合能源系统优化调度方法

Optimal Scheduling Method for Integrated Electro-thermal Energy System Considering Heat Transmission Dynamic Characteristics

提出考虑热能输运动态特性的电-热综合能源系统(integrated energy systems,IES)优化调度方法。首先针对热网的延时和储热等动态特性,提出一种热能输运准动态模型,分析了热网的虚拟储能潜力;进而结合能源设备模型,提出一种考虑热能输运动态特性的电-热IES优化调度方法,将热网作为调度资源参与到电-热IES优化运行中,实现对热网虚拟储能的调度利用。仿真结果表明,该方法由于考虑了热能传输动态特性,可充分发掘热网虚拟储能在分时电价的激励下,参与电-热IES经济优化运行的调节潜力,有效利用电、热系统的互补特性,降低IES运行成本。

An optimal scheduling method for integrated electro-thermal energy system considering heat transmission dynamic characteristics is proposed in this paper.Firstly,a quasi-dynamic model of heat transmission is proposed based on dynamic characteristics of heating network such as time delay and heat storage.The virtual storage potential of heating network is analyzed.Then,combined with energy equipment model,an optimal scheduling method considering heat transmission dynamic characteristics is proposed.The heating network is used as scheduling resource to participate in the optimal scheduling of integrated electro-thermal energy system.Scheduling of the virtual storage of heating network is thus achieved.Numerical studies demonstrate that the model considering heat transmission dynamic characteristics is able to reduce operational cost of integrated energy system by making use of the virtual storage inspired by time-of-use electricity prices as well as taking advantage of the complementarity between electrical and thermal power flow.